In this study, 26 (13 ♀♀, 13 ♂♂) specimens of two chromosomal forms of Nannospalax ehrenbergi from Mardin and Siirt-Batman provinces were compared with using by geometric morphometrics to evaluate by taxonomically. According to the results of Relative Warp Analysis (RWA), Principal Component Analysis (PCA) and Canonical Variance Analysis (CVA), populations of 2n=52 (Mardin) and 2n=56 (Siirt-Batman) are different from each other by geometric morphometrics. Also according to the CVA, female and male populations’ skulls of 2n=56 (Siirt-Batman) showed that sexual dimorphism.
Skulls of specimens are deposited at the Biology Department, Science Faculty, Dicle University, Turkey.
Key words: Rodentia, Spalacidae, Nannospalax ehrenbergi, geometric morphometrics, Turkey.